Sonic adventure 2 Battle Recap Sonic adventure 2 recap theme is started:Knuckles the echidna:Im Knuckles the Echidna just call me Knuckles. Following the signal from the Master emerald. i found myself deep inside this canyon. this place looks like a deserted mine of some kind. Most of its underwater now! its gonna to be tough finding pieces of the Master Emerald here. No time to complain about it! i have to find the pieces of the Master Emerald quickly! 20:21 Mountaainous Region: Mine Sonic adventure 2 Battle Hd: Stage: 08 Aquatic Mine 1st Mission: Find 3 pieces of the Master Emerald! Knuckles the Echidna:hmm,i Dint expect the inside of the mines to be likes this! This Going to be tougher than i thought! Knuckles appears using the Radars to finds 3 the master emeralds pieces and starts finding around here!